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Science-Cell Process
Life Science-Cell Processes Unit
| Definition | Term |
|---|---|
| Diffusion | The movement of particles from an area of high concentration to an area of low concentration |
| Osmosis | The diffusion of water through a membrane |
| Passive Transport | The diffusion of particles through membrane bound proteins, no energy required |
| Active Transport | The movement of particles through membrane bound proteins against the normal direction of diffusion, energy required |
| Endocytosis | The cell membrane surrounds a particle and encloses it in a vesicle, bringing it into the cell |
| Exocytosis | The fusion of a vesicle to the cell membrane and the release of its contents out of the cell |
| Semi-permeable Membrane | A membrane that lets some molecules through it but not others |
| Photosynthesis | The process where light energy is converted into sugar |
| Cellular Respiration | The process where sugar is converted into cellular energy, ATP |
| Stomata | Small pores in the lower epidermis of the leaf or stem of a plant, forming an opening that allows movement of gases |
| Transpiration | The movement of water molecules from the roots through the stem and out of the leaves of plants |
| Chlorophyll | A green pigment that is responsible for the absorption of light to provide energy for photosynthesis |
| Reactant | A substance that takes part in and undergoes change during a reaction, the materials that go into a reaction |
| Product | What is produced by a reaction, that materials that come from a reactioon |
| Fermentation | The process where sugar (glucose, C6, H12,O6) is broken down without the use of oxygen |
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